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Mostrando ítems 851-860 de 1615
Laelia Lindl. [with a new combination]
(2022-02)
Se presentan, discuten e ilustran especies costarricenses del género Laelia (Orchidaceae). Una nueva combinación, Laelia lueddemannii subsp. costaricana, se propone.
Copulation behaviour of Glossina pallidipes (Diptera: Muscidae) outside and inside the female, with a discussion of genitalic evolution
(Bulletin of Entomological Research (2007) 97, 1–18, 2007-04-26)
If species-specific male genitalia are courtship devices under sexual selection by cryptic female choice, then species-specific aspects of the morphology and behaviour of male genitalia should often function to stimulate ...
Novel Sulfolobus Virus with an Exceptional Capsid Architecture
(2017)
A novel archaeal virus, denoted Sulfolobus ellipsoid virus 1 (SEV1), was isolated from an acidic hot spring in Costa Rica. The morphologically unique virion of SEV1 contains a protein capsid with 16 regularly spaced ...
Evidence of maternal provisioning of alkaloid-based chemical defenses in the strawberry poison frog Oophaga pumilio
(2014)
Many organisms use chemical defenses to reduce predation risk. Aposematic dendrobatid frogs sequester alkaloid-based chemical defenses from a diet of arthropods, but research on these defenses has been limited to adults. ...
Niveles de estrés de la población estudiantil en Costa Rica. Diferencias en función de las variables: nivel socioeconómico, rendimiento académico, nivel académico y zona geográfica
Stress levels of student population in Costa Rica. Differences according to socioeconomic, academic achievement, educational level, and geographic location variables
(2016)
En este trabajo se describen los niveles de estrés de la población estudiantil en función de las variables: nivel socioeconómico, rendimiento académico, nivel académico, zona geográfica y género. Para este estudio se aplicó ...
Prolonged development of the middle ear in Rhinella horribilis
(2018)
Despite the benefit of the tympanic middle ear to airborne hearing sensitivity, anurans range in how soon they develop functional middle ears after transitioning to life on land. Previous evi- dence suggested that bufonids ...
Letters to the Editor. Rebuttal to Sauleda
(2019)
In the Orchids issue for May of
this year, Rubén Sauleda and Claudia
Elena Gutiérrez commented on a few
points of a book review I wrote for the
second volume of Orchids, a Colombian
Treasure, by Pedro Ortiz Valdivieso ...
Vitamin E and carotenoid profiles in leaves, stems, petioles and flowers of stinging nettle (Urtica leptophylla Kunth) from Cost Rica
(2022-05)
BACKGROUND: Local leafy vegetables are gaining attention as affordable sources of micronutrients, including vitamins, pro-vitamin carotenoids and other bioactive compounds. Stinging nettles (Urtica spp.) are used as source ...
Lepanthes arenasiana (Orchidaceae: Pleurothallidinae), a new species from Costa Rica
(2010-01)
Lepanthes arenasiana from the Talamanca range in Costa Rica is described and illustrated. It is most similar to L. lancifolia but differs in having denticulate sepals, the petals with the upper lobe oblong, narrowing at ...
Systematics, taxonomy, and distribution of Myriogenospora G.F. Atk. (Clavicipitaceae, Hypocreales, Ascomycota)
(2019-09-06)
Based on new specimens of Myriogenospora spp. from Costa Rica and Panama, we present morphological analyses,
systematic conclusions, additions to host ranges, and geographical distribution data for the two species currently ...